Volume
gal (UK)tohL
Convert imperial gallons (gal (UK)) to hectolitres (hL).
Factor1 gal (UK) = 0.0454609 hL
Converter
gal (UK)
Accepts numbers or expressions, e.g. 150 + 14.7
Result
hL
Rendered to 6 significant figures.
Formula
Formula
hL = gal (UK) × 0.0454609
Multiply any value in imperial gallons by 0.0454609 to obtain the value in hectolitres.
Worked example
Convert 22 gal (UK) to hL.
- 01Start with 22 gal (UK).
- 02Multiply by the conversion factor: 22 × 0.0454609 = 1.00014 hL.
Result22 gal (UK) = 1.00014 hL
Conversion table
| gal (UK) | hL |
|---|---|
| 1 | 0.045461 |
| 2 | 0.090922 |
| 5 | 0.2273 |
| 10 | 0.45461 |
| 20 | 0.90922 |
| 50 | 2.273 |
| 100 | 4.5461 |
| 200 | 9.0922 |
| 500 | 22.73 |
| 1000 | 45.461 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from gal (UK) to hL?
1 gal (UK) equals 0.0454609 hL. To convert, multiply the value in imperial gallons by 0.0454609.
How do I convert 1 gal (UK) to hL?
1 gal (UK) = 0.0454609 hL. For any value, multiply by 0.0454609.
How do I convert hL back to gal (UK)?
Divide by the same factor — or equivalently, multiply by 21.99692. So 1 hL = 21.9969 gal (UK).
When would I need to convert imperial gallon to hectolitre?
Volume conversions are used for tank sizing, batch calculations, and bridging between vendor specs (gallons, barrels, ft³) and process documentation (m³, litres).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).